Jeong Yoon is a caring wife and mother and a sensitive woman who finds herself plunged into a legal ordeal thousands of miles from home. After years of planning, she and her husband Jong Bae open an auto body repair shop, only to see everything they've worked for stripped away when a loan Jong Bae had guaranteed defaults. Facing financial despondency, the couple gets into a vicious fight about money, sending Jeong Yeon away, leaving only a cryptic note saying she'll be back in a few days. When she turns up looking nervous at Orly Airport in Paris with over 30 kilograms of cocaine in her luggage, it is the beginning of a globe-spanning nightmare that began with an old friend and a tempting proposition. Written by CJ Entertainment

Eun-joo moves out of her house "Il Mare", leaving behind a Christmas card for the eventual new owner of the house in 1999. In it she asks him/her to forward any mail of hers to her new address in the city. It is 1997 and Sung-hyun, the first owner of "Il Mare" is moving in and finds in his mailbox the Christmas card from Eun-joo. Thinking it was a joke, Sung-hyun leaves her a letter telling her so and reminds her that its 1997 not 1999. Eventually the two realize that they are separated by two years of time but can somehow communicate through the mailbox and begin to form a friendship through their letters.